Fatigue and Fracture Control for Powder Metallurgy Components
This article discusses the fracture and fatigue properties of powder metallurgy (P/M) materials depending on the microstructure. It describes the effects of porosity on the P/M processes relevant to fatigue and fracture resistance. The article details the factors determining fatigue and fracture resistance of P/M materials. It reviews the methods employed to improve fatigue and fracture resistance, including carbonitriding, surface strengthening and sealing treatments, shot-peening, case hardening, repressing and resintering, coining, sizing, and postsintering heat treatments. Safety factors for P/M materials are also detailed.
Randall M. German, Richard A. Queeney, Fatigue and Fracture Control for Powder Metallurgy Components, Fatigue and Fracture, Vol 19, ASM Handbook, By ASM Handbook Committee, ASM International, 1996, p 337–344, https://doi.org/10.31399/asm.hb.v19.a0002374
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